Guest Wi-Fi dashboard card (network + rotating password + join QR)

New home card 'unifi.guest_wifi': shows the guest SSID, the current
rotated password (unifi.password_rotation.last_password), and a WPA
join QR built from the WIFI: string. Polls app/unifi/guest-card/data
(auth) every 60s so it updates the moment the rotation engine changes
the password — the QR regenerates client-side to match. Self-hides
until enabled with an SSID and a rotated password; grant-gated via
Admin -> Settings -> Dashboard Cards. New settings (WiFi rotation
section): enable + network name + card title.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

composer.json

@@ -1,7 +1,7 @@
 {
     "name": "dashboard/unifi",
     "description": "UniFi network management, WiFi stats, and captive portal authentication for the Dashboard platform",
-    "version": "1.13.1",
+    "version": "1.13.2",
     "type": "library",
     "license": "MIT",
     "autoload": {